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• 31 August 2005 <br /> AGE-NC Project No 96-0232 <br /> Page 5 of 30 <br /> respectively Analytical results of soil and grab water samples are summarized In Tables 2 <br /> and 3 A report of findings(Quarterly Report-September 1997, dated 16 October 1997)was <br /> prepared by AGE and submitted to the SJCEHD <br /> • June 1998- One ground water monitoring well (MW-5) was installed on-site at a depth of <br /> 25 feet bsg and two ground water monitoring wells (MW-6A/B and MW-7) were installed <br /> off-site to depths of 48 feet and 241/2 feet bsg, respectively Boring logs and an as-built well <br /> construction descriptions of wells MW-5, MW-6 and MW-7 are in Appendix F Based on <br /> soil composition data obtained from MW-5,MW-6 and MW-7,cross sections A-A 'and B-B' <br /> were constructed depicting the general subsurface soil composition on-site and off- <br /> site (Figures 5 and 6, respectively) Laboratory analysis of soil samples collected from <br /> MW-6 and MW-7 did not detect any constituents of concern,soil samples were not collected <br /> from MW-5 Laboratory analysis of groundwater samples detected TPH-d from wells MW-5 <br /> and MW-6(A and B) at concentrations as high as 280 µg/l,MTBE was detected from wells <br /> MW-6 (A and B) and MW-7 at concentrations as high as 14 µg/l Analytical results of soil <br /> and ground water samples are summarized In Tables 2 and 7 A report of findings(Quarterly <br /> Report - July 1998, dated 24 August 1998) was prepared by AGE and submitted to the <br /> SJCEHD <br /> • February through December 1999-An Initial grab water sample collected from the Rocky's <br /> Restaurant domestic drinking water well (RDW-1) detected MTBE at a concentration of <br /> 7 6 µg/l, between April and December 1999, laboratory analysis of RDW-1 grab water <br /> samples detected MTBE at concentrations ranging from less than 1 µg/l to 18 µg/1 <br /> Analytical results of the Rocky's Restaurant Domestic Well (RDW-1) grab ground water <br /> sample are summarized In Table 8 A report of findings(Quarterly Report-February 1999, <br /> dated 10 May 1999,Monthly Report-February 2000, dated 20 March 2000) was prepared <br /> by AGE and submitted to the SJCEHD <br /> • March 2000-Seven soil borings (P6 through P 12) were advanced to depths of five feet bsg <br /> to assess soil-gas vapor concentrations near the existing fuel dispenser and UST system <br /> (Figures 2 and 3), boring logs for P6 through P 12 are in Appendix F TPH-g, benzene and <br /> MTBE were detected In the P6 sample,near the south fuel dispenser area, at concentrations <br /> of 600 pg/l, 0 5 pg/l and 2 5 µg/1, respectively Analytical results of soil-gas vapor samples <br /> are summarized In Table 4 <br /> A down-hole video camera probe was conducted at the Rocky's Restaurant domestic water <br /> well RDW-1 The video probe revealed perforated well screen between 67 and 76 feet bsg, <br /> between 87 and 104 feet bsg and between 130 and 142 feet bsg,the bottom of the water well <br /> casing below 142 feet bsg was filled with sediment Two ground water pumps were removed <br /> from the well prior to video camera probing activities, the bottom of the first pump (fire <br /> water) was set at 84 feet bsg and the bottom of the second pump (potable water) was set at <br /> • 105 feet bsg According to well Installation records reviewed at the SJCEHD, the sanitary <br /> Advanced GeoEnvironmental,Inc <br />